In computing, server hardening is usually the process of securing a system by reducing its surface of vulnerability. A system has a larger vulnerability surface as it fulfills more functions; in principle a single-function system is more secure than a multi-purpose one. Reducing the available vectors of attack typically includes the removal of unnecessary software, unnecessary usernames or logins and disabling or removal of unnecessary services.

Server Hardening comprises of an IPA server which is the future of user administration in a Linux environment for the implementation of the IDM server. It also helps to implement the PAM (Pluggable Authentication Module) for password authentication, rsyslog server, and auditing. This feature auditing helps an administrator to secure their servers from the internal network and make server more hardened.